How can Batman defeat The Hulk?

As Bruce Wayne, he can buy Marvel from Disney and discontinue the production of Hulk's comics.

That makes me angry.
See what I did there?

Loved the time Spider-Man defeated the Hulk by telling a joke, which made him revert back to Bruce Banner.

Batman can't do that, though.

Maybe Batman could use calm, reasoned debate and bore the Hulk into reverting.
- The Credible Hulk always cites his sources.
Batman tells a joke
https://duckduckgo.com/?q=some+days+you+just+can%27t+get+rid+of+a+bomb&iax=videos&ia=videos&iai=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DA54ouDOmIS0
What was the joke.
- Well, he didn't actually complete it.

Hulk Repellent.

More seriously: prep time, massive amounts of sedatives, or a phone call to Superman to get him to deal with it instead.

See also, any time Batman has had to deal with similar DC villains: Doomsday, Darkseid, Bane, etc.

or a phone call to Superman to get him to deal with it instead
That would be convenient, if Batman hadn't killed Superman already.
Bane is nowhere near as strong as Doomsday, Darkseid, or the Hulk, but I get what you're saying

Pays for Bruce Banner to have therapy and anger management to work through his PTSD and anger issues.

Batman lures the Hulk into a custom designed electromagnetic levitation cell. Hulk is purely physical, if he can't touch the walls or floor, he can't move and he can flail all he wants as he rotates helplessly in the middle of the EM chamber.

As long as it has power, Hulk is neutralized.

Edit: As @HessiaNerd mentions below, Hulk Thunderclap. I don't know if Hulk is immune to vacuum but if he is then that might counter thunderclap. If he's not immune to vacuum then Batman would not use this as you know, 'no killing'.

https://media.tenor.com/O6yN6AOBTdcAAAAM/hulk-thunderclap.gif
- Ok valid, going back to edit my post.
Hulk can survive being in a vacuum, no problem
Low pressure atmosphere to counter thunderclap

Don't make him angry
If Hulk is already angry, light a lavender candle and play some calming music

There was a comic where they were fighting, and Batman dropped a pellet of knockout gas then got Hulk winded so that he had to breathe in the gas.

He also has some suits that would help, like the Anti-Predator armour or Justice Buster armour.

mech bat suit or other vehicles, knockout gas

He'd probably cure him.

Or, pull the world war Hulk move and jettison him into space.

Hulk: HULK SMASH STUPID BATMAN FOR SENDING HULK TO SPACE!
- I'd love to see Hulk grabbing, twirling and tossing Batman using his cape against him.

Telling the Hulk that the sun is getting real low and hold his hand.

Hulk has balls right? A good swift kick in the balls should do it.

I don't see what could possibly go wrong

Send him into orbit.

He'd be controlled by a pro fgc player while the hulk is controlled by me.

Ammag radiation.